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Finding the Fourth Proportional to 181,424.40, 272,136.60 and 82,928.40

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Solution

The fourth proportional to 181,424.40, 272,136.60 and 82,928.40 is: 124,392.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,424.40 : 272,136.60 = 82,928.40 : x
  2. Step 2: Convert to fraction form
    181,424.40/272,136.60 = 82,928.40/x
  3. Step 3: Cross multiply
    181,424.40x = 272,136.60 × 82,928.40
  4. Step 4: Simplify right side
    181,424.40x = 22,567,852,819.44
  5. Step 5: Solve for x
    x = 22,567,852,819.44/181,424.40
  6. Step 6: Final answer
    x = 124,392.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.